20112793820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{461}}^1\times {\mathrm{44519}}^1$

素因数の和:45003

約数の個数: 72

約数和(自身を含む): 49240366560

約数和(自身を除く): 29127572740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 461, 490, 922, 980, 1844, 2305, 3227, 4610, 6454, 9220, 12908, 16135, 22589, 32270, 44519, 45178, 64540, 89038, 90356, 112945, 178076, 222595, 225890, 311633, 445190, 451780, 623266, 890380, 1246532, 1558165, 2181431, 3116330, 4362862, 6232660, 8725724, 10907155, 20523259, 21814310, 41046518, 43628620, 82093036, 102616295, 143662813, 205232590, 287325626, 410465180, 574651252, 718314065, 1005639691, 1436628130, 2011279382, 2873256260, 4022558764, 5028198455, 10056396910, 20112793820]

約数ペア:

[(1, 20112793820), (2, 10056396910), (4, 5028198455), (5, 4022558764), (7, 2873256260), (10, 2011279382), (14, 1436628130), (20, 1005639691), (28, 718314065), (35, 574651252), (49, 410465180), (70, 287325626), (98, 205232590), (140, 143662813), (196, 102616295), (245, 82093036), (461, 43628620), (490, 41046518), (922, 21814310), (980, 20523259), (1844, 10907155), (2305, 8725724), (3227, 6232660), (4610, 4362862), (6454, 3116330), (9220, 2181431), (12908, 1558165), (16135, 1246532), (22589, 890380), (32270, 623266), (44519, 451780), (45178, 445190), (64540, 311633), (89038, 225890), (90356, 222595), (112945, 178076)]